gistfile1.txt

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';

  var name1= 'X';
  var name2= 'O';

  function teste(){
    return document.getElementById('name1').value;
  }
  function Square(props) { 
      return (
        <button className="square" onClick= { props.onClick}>
          {props.value}
        </button>
      );
  }
  
  class Board extends React.Component {
    renderSquare(i) {
      return( 
        <Square 
          value={this.props.squares[i]} 
          onClick={() => this.props.onClick(i)}
        />
      );
    }
  
    render() {
      return (
        <div>
          <div className="board-row">
            {this.renderSquare(0)}
            {this.renderSquare(1)}
            {this.renderSquare(2)}
          </div>
          <div className="board-row">
            {this.renderSquare(3)}
            {this.renderSquare(4)}
            {this.renderSquare(5)}
          </div>
          <div className="board-row">
            {this.renderSquare(6)}
            {this.renderSquare(7)}
            {this.renderSquare(8)}
          </div>
        </div>
        
      );
    }
  }
  
  class Game extends React.Component {
    constructor(props) {
      super(props);
      this.state = {
        history: [{
          squares: Array(9).fill(null)
        }],
        stepNumber: 0,
        xIsNext: true,
        start: true       
      };
    }

    handleClick(i){
      const history = this.state.history.slice(
        0, this.state.stepNumber + 1);
      const current = history[history.length - 1];
      const squares = current.squares.slice();
      if(calculateWinner(squares) || squares[i]
      || name1 == ''|| name2 == ''){
        return;
      }
      squares[i] = this.state.xIsNext ? name1.substring(0,1): name2.substring(0,1);
        this.setState({
        history: history.concat([{
        squares: squares
       }]),
       stepNumber: history.length,
        xIsNext: !this.state.xIsNext,
      });
    }
    jumpTo(step){
      this.setState({
        stepNumber: step,
        xIsNext: (step % 2) === 0
      });
    }

    render() {
      const history = this.state.history;
      const current = history[this.state.stepNumber];
      const winner = calculateWinner(current.squares);

      const moves = history.map((step, move) => {
        const desc = move ?
        'Go to move #' + move :
        'Go to game start';
      return(
        <li key = {move}>
          <button onClick = {() => this.jumpTo(move)}>{desc}</button>
        </li>
      );
    });

     
      let status;
      if(winner){
        status = alert(`${!this.state.xIsNext ?
          name1 : name2} ganhou`);
      }else{
        status = `próximo: ${this.state.xIsNext ?
         name1 : name2}`;
      }
if(this.state.start == true){
        return (
          <div className="game">
            <div className="game-board">
              <Board 
                squares={current.squares}
                onClick={i => this.handleClick(i)}
              />
            </div>
            <div className="game-info">
              <div>{status}</div>
              <ol>{moves}</ol>
            </div>
          </div>
          );
       }else{
         return(
          <div>
            <h1>jogador 1</h1>
            <input></input>
            <h1>jogador 1</h1>
            <input></input>
            <button>JOGAR</button>
          </div>
         );
      }
    }
  }


  
  // ========================================
  
  ReactDOM.render(
    <Game />,
    document.getElementById('root')
  );


  function calculateWinner(squares) {
    const lines = [
      [0, 1, 2],
      [3, 4, 5],
      [6, 7, 8],
      [0, 3, 6],
      [1, 4, 7],
      [2, 5, 8],
      [0, 4, 8],
      [2, 4, 6],
    ];
    for (let i = 0; i < lines.length; i++) {
      const [a, b, c] = lines[i];
      if (squares[a] && squares[a] === squares[b] && squares[a] === squares[c]) {
        return squares[a];
      }
    }
    return null;
  }